Adjustable unit circle board for evaluating trigonometric functions and their signs



FIG. 1 is a front elevational view of the adjustable unit circle board for evaluating trigonometric functions and their signs showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side view thereof

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an adjustable unit circle oard for evaluating trigonometric functions and their signs, as shown and described. 